Gasoline engine



FIG. 1 is a perspective view of a gasoline engine of the present invention;

FIG. 2 is another perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a right side elevational view thereof; and,

FIG. 8 is a bottom plan view thereof. 

The ornamental design for a gasoline engine, as shown and described. 